I just wanted to contact him again and got a smtp error with his emailaddress..
Contacted him on telegram but he isn't responding.

The weird thing was that I opened an official support ticket from yobit so just yobit workers could see this message and he
sent exactly my message and asked me wether I need help. Thats why I did send him my coins. I though if he scams me yobit scams me and I didn't think they would do such thing.